On Tap in the Capitol, July 19

BUSINESS GROUPS DISCUSS ONLINE SALES TAX: The Florida Chamber of Commerce, the Florida Retail Federation, Associated Industries of Florida and Florida TaxWatch will hold a news conference to release a study about collecting sales taxes on purchases made over the Internet. (11 a.m., Florida Press Center, 336 East College Ave., Tallahassee.)

DEMS SEEK CHANGES IN 'STAND YOUR GROUND': Sen. Audrey Gibson, Rep. Mia Jones and Rep. Reggie Fullwood, all Jacksonville Democrats, will take part in a news conference calling for changes in the controversial "stand your ground" law. Also expected to take part are Duval County Democratic Party officials, NAACP leaders and pastors. (11:30 a.m., Duval County Courthouse, 501 West Adams St., Jacksonville.)

BENNETT TO SPEAK AT YOUTH LEADERSHIP EVENT: Education Commissioner Tony Bennett is expected to speak to high-school students with disabilities who are taking part in the Florida Youth Leadership Forum. (Noon, University Center Club, Florida State University, Tallahassee.)

RUBIO TO RAISE CONCERNS ABOUT OBAMACARE: U.S. Sen. Marco Rubio, R-Fla., will meet with business owners to discuss how the Affordable Care Act, better known as Obamacare, is affecting their businesses. (12:30 p.m., Gatorland, 14501 South Orange Blossom Trail, Orlando.)